An inflation fluid supply and discharge assembly includes a combined two-way inlet and outlet valve having a valve body with two separate flow paths separated for flows in opposite directions. Each flow path is associated with a valve seat with a shutter, which cooperates with the valve seat in the manner of a non-return valve. One of the flow paths, intended for the passage of an incoming flow to a collection body, can be connected to a fluid supply source, the other flow path enabling the passage of a discharge flow from the collection body. A shutter is stably stressed against the corresponding valve seat, in a position of interdiction of the discharge or outlet flow, and is moved to a position at a distance from the valve seat by control members or automatically by a predetermined overpressure condition of the fluid in the collection body.

An inflation fluid supply and discharge assembly includes a combined two-way inlet and outlet valve having a valve body with two separate flow paths separated for flows in opposite directions. Each flow path is associated with a valve seat with a shutter, which cooperates with the valve seat in the manner of a non-return valve. One of the flow paths, intended for the passage of an incoming flow to a collection body, can be connected to a fluid supply source, the other flow path enabling the passage of a discharge flow from the collection body. A shutter is stably stressed against the corresponding valve seat, in a position of interdiction of the discharge or outlet flow, and is moved to a position at a distance from the valve seat by control members or automatically by a predetermined overpressure condition of the fluid in the collection body.

A system and process for removing rigid unconsolidated buoyancy material from a subsea facility, disposing rigid unconsolidated buoyancy material to a subsea facility, and recovering said rigid unconsolidated buoyancy material for reuse.

A system and process for removing rigid unconsolidated buoyancy material from a subsea facility, disposing rigid unconsolidated buoyancy material to a subsea facility, and recovering said rigid unconsolidated buoyancy material for reuse.

A floatation attachment system may include a floatation attachment device configured to be attached to an object. The floatation attachment device may include a floatation material configured to provide buoyancy to the object it attaches and an attachment surface configured to directly attach the object. The floatation material may include a material that expands or generates gas upon contact with water. The system may include a dispenser such as a sheet of pre-cut floatation attachment devices or for manual cutting for customized shapes and sizes. In one instance, the system includes a tape roll dispenser for dispensing floatation attachment devices from a roll.

A floatation attachment system may include a floatation attachment device configured to be attached to an object. The floatation attachment device may include a floatation material configured to provide buoyancy to the object it attaches and an attachment surface configured to directly attach the object. The floatation material may include a material that expands or generates gas upon contact with water. The system may include a dispenser such as a sheet of pre-cut floatation attachment devices or for manual cutting for customized shapes and sizes. In one instance, the system includes a tape roll dispenser for dispensing floatation attachment devices from a roll.

The present invention comprises a reusable recovery system for sport fishing rod-and-reel combinations that are dropped overboard, which floats the fishing rod-and-reel to the surface of the water. The core components of the invention are a hollow tube, a gas cartridge, an inflatable bag, configured as follows: a tube is attached to the fishing rod handle as not to interfere with normal fishing operations, a gas cartridge with the discharge side of the cartridge pointed toward the open end of the tube, an inflatable bag is folded to fit in the tube and attached to receive the gas when discharged, the open end of the tube has a cap that allows water to enter at a certain depth of water. In some embodiments the invention can be used to recover gear lost overboard on a boat, like a fishing rod and reel.

A lift bag for moving an object underwater includes a lift bag body and a buoyancy regulator device within an internal cavity of the lift bag body. The buoyancy regulator device includes concentric regulator tubes. Each regulator tube includes a regulator tube opening and the regulator tube openings may be aligned to define a regulator tube aperture. The regulator tube aperture is in fluid communication with a lift bag slot formed in the lift bag body. A constant buoyancy for the lift bag is determined by adjusting the position of the regulator tube aperture by moving the inner and outer regulator tubes with respect to each other.

A lift bag for moving an object underwater includes a lift bag body and a buoyancy regulator device within an internal cavity of the lift bag body. The buoyancy regulator device includes concentric regulator tubes. Each regulator tube includes a regulator tube opening and the regulator tube openings may be aligned to define a regulator tube aperture. The regulator tube aperture is in fluid communication with a lift bag slot formed in the lift bag body. A constant buoyancy for the lift bag is determined by adjusting the position of the regulator tube aperture by moving the inner and outer regulator tubes with respect to each other.

A positioning and rescue device for an unmanned underwater vehicle, comprising a battery (1), a switch (2), a protective resistor (3), an electromagnetic relay (4), a master control chip (5), a GPS positioning system (6), an igniter (7), a partition (8), an air bag (9), a shell (10), and a rope (11). The battery (1), the switch (2), the protective resistor (3), the electromagnetic relay (4) and the master control chip (5) are sequentially connected by means of wires to form a series circuit, and the igniter (7) and the GPS positioning system (6) are separately connected to the master control chip (5) by means of wires; two normally open contacts of a control loop of the electromagnetic relay (4) are respectively connected to two ends of a general power supply (15).